JPS579526A - Manufacture of square shaped metallic tube through convex roll - Google Patents

Manufacture of square shaped metallic tube through convex roll

Info

Publication number
JPS579526A
JPS579526A JP8445180A JP8445180A JPS579526A JP S579526 A JPS579526 A JP S579526A JP 8445180 A JP8445180 A JP 8445180A JP 8445180 A JP8445180 A JP 8445180A JP S579526 A JPS579526 A JP S579526A
Authority
JP
Japan
Prior art keywords
roll
welding
square shaped
rolls
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8445180A
Other languages
Japanese (ja)
Other versions
JPS643568B2 (en
Inventor
Shozo Watanabe
Seiichiro Ogawa
Hisashi Sogawa
Eikichi Kaji
Akio Akahori
Hirotaku Onda
Hirotsugu Haga
Kazuo Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Nippon Steel Metal Products Co Ltd
Original Assignee
Nippon Steel Corp
Nippon Steel Metal Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp, Nippon Steel Metal Products Co Ltd filed Critical Nippon Steel Corp
Priority to JP8445180A priority Critical patent/JPS579526A/en
Publication of JPS579526A publication Critical patent/JPS579526A/en
Publication of JPS643568B2 publication Critical patent/JPS643568B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To produce a square shaped metallic tube efficiently and with a slight inflicted change in the mechanical property of material by guiding a corner-bended blank material of a square shaped tube to welding rolls, performing butt welding its edges and leveling four side faces.
CONSTITUTION: A beltlike material 1 is bent at positions 4, 4 so as to leave widths in both end parts by an upward cornerbending roll 3, the middle part of 4, 4 is then bent so as to make right and left sides and a downward side. Then, forcing a fin roll 9a into a gap between edges of upward opening, and pushing a blank material in a caliber consisting of a frange roll 9b, right and left side rolls 9c and a lower roll 9d from 4 sides, thereby its cross section gets near a square shape. A welding roll 10 is then screwed-down and is fitted to the upper and lower rolls and right and left side rolls, then performing an electric butt welding the edge of the downward opening, thereby, a square shaped metallic tube 12 having a welding juncture 11 on its upward side face is made. This tube 12 is adjusted its sectional shape and its longitudinal shape through a Turk's head roll 13 for leveling, and is cut by a desired length to make a product.
COPYRIGHT: (C)1982,JPO&Japio
JP8445180A 1980-06-21 1980-06-21 Manufacture of square shaped metallic tube through convex roll Granted JPS579526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8445180A JPS579526A (en) 1980-06-21 1980-06-21 Manufacture of square shaped metallic tube through convex roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8445180A JPS579526A (en) 1980-06-21 1980-06-21 Manufacture of square shaped metallic tube through convex roll

Publications (2)

Publication Number Publication Date
JPS579526A true JPS579526A (en) 1982-01-19
JPS643568B2 JPS643568B2 (en) 1989-01-23

Family

ID=13830974

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8445180A Granted JPS579526A (en) 1980-06-21 1980-06-21 Manufacture of square shaped metallic tube through convex roll

Country Status (1)

Country Link
JP (1) JPS579526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224084A (en) * 1982-06-21 1983-12-26 Teruyoshi Imamura Manufacture of square-shaped electric welded steel pipe
KR100332736B1 (en) * 1999-09-16 2002-04-17 김민 a quadrilateral pipe manufacturing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224084A (en) * 1982-06-21 1983-12-26 Teruyoshi Imamura Manufacture of square-shaped electric welded steel pipe
JPS6323857B2 (en) * 1982-06-21 1988-05-18 Teruyoshi Imamura
KR100332736B1 (en) * 1999-09-16 2002-04-17 김민 a quadrilateral pipe manufacturing apparatus

Also Published As

Publication number Publication date
JPS643568B2 (en) 1989-01-23

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